Thread drawoff tube for an open-end spinning unit

Details Thread drawoff tube for an open-end spinning unit Thread drawoff tube for an open-end spinning unit

1974-04-18

1976-06-29

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Unitary multiple twist devices

57 774, 57106, D01H 112, D01H 1304

Patent

active

039656616

ABSTRACT:
In a spinning apparatus comprising a spinning rotor and a centrally arranged thread drawoff tube for drawing off thread from the spinning chamber, an improved thread drawoff tube having a thread passage for delivering the thread from the tube is provided, the thread passage being provided with a combination of a curved ring shaped friction surface and a flat ring shaped friction surface formed outside of the curved ring shaped surface, the friction resistance of the thread passage decreasing toward the outer edge of the flat ring shaped surface.

REFERENCES:
patent: 3481128 (1969-12-01), Landuehrkamp et al.
patent: 3640061 (1972-02-01), Landuehrkamp
patent: 3696604 (1972-10-01), Nozaki et al.
patent: 3778989 (1973-12-01), Schon
patent: 3789597 (1974-02-01), Schon
patent: 3805505 (1974-04-01), Schuster
patent: 3822541 (1974-07-01), Croasdale et al.
patent: 3844100 (1974-10-01), Croasdale et al.

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